Exactly. Especially on a desktop operating system. On iOS at least you can have applications give notification over things like screenshotting i.e. Wickr, but i

Exactly. Especially on a desktop operating system. On iOS at least you can have applications give notification over things like screenshotting i.e. Wickr, but if you are on desktop it's stupidly easy to retransmit or download the contents of an email. Maybe Gmail is just admitting that this is the reality (which it is).